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Method for preparing zeolite molecular sieve by using oil shale residues

A technology of oil shale waste residue and zeolite molecular sieve, which is applied to the removal of solid waste and crystalline aluminosilicate zeolite, etc., can solve the problems of pollution, occupation of land and environment, avoid large accumulation, reduce environmental pollution, and improve utilization rate Effect

Active Publication Date: 2011-04-06
FUSHUN MINING IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for preparing zeolite molecular sieve with oil shale waste residue, which can turn oil shale waste residue into treasure, thereby solving the problems of land occupation and environmental pollution, and at the same time better achieve oil shale The purpose of comprehensive utilization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] ①Take 100 g of oil shale waste residue that has been ground to below 100 mesh and roasted and activated at 550°C for 2 hours;

[0018] ② To the roasted waste residue, add H with a mass concentration of 30% according to a mass ratio of 1:3. 2 SO 4 Solution, heated to 90-95 ° C for 5 hours, hot filtered, separated into a primary aluminum-iron solution and filter residue, washed the resulting filter residue with water 1-2 times, and the obtained washing solution was incorporated into the primary aluminum-iron solution;

[0019] 3. Evaporate the primary aluminum-iron solution obtained in step 2. to 2 / 6 of the original volume, cool and crystallize, filter to obtain aluminum sulfate crystals and acid-containing aluminum-iron filtrate;

[0020] ④ According to the mass ratio of 1:3, the acid-containing aluminum-iron filtrate obtained in step ③ is mixed with the newly added oil shale waste residue, heated to 90-95 ° C for 3 hours, cooled and crystallized, filtered to obtain alu...

Embodiment 2

[0026] ①Take 200g of oil shale waste residue that has been ground to below 100 mesh and activated at 550°C for 2 hours;

[0027] ② To the roasted waste residue, add H with a mass concentration of 30% according to a mass ratio of 1:3. 2 SO 4 Solution, heated to 90-95 ° C for 5 hours, hot filtered, separated into a primary aluminum-iron solution and filter residue, washed the resulting filter residue with water 1-2 times, and the obtained washing solution was incorporated into the primary aluminum-iron solution;

[0028] 3. the primary aluminum-iron solution obtained in step 2. is evaporated to 4 / 6 of the original volume, crystallized by cooling, and filtered to obtain aluminum sulfate crystals and acid-containing aluminum-iron filtrate;

[0029] ④ According to the mass ratio of 1:3, the acid-containing aluminum-iron filtrate obtained in the previous step ③ is mixed with the newly added oil shale waste residue, heated to 90-95 ° C for 3 hours, cooled and crystallized, filtered ...

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Abstract

The invention discloses a method for preparing a zeolite molecular sieve by using oil shale residues. The method comprises the following steps: separating SiO2 in the oil shale residues to be solid phase by adopting acid dipping, changing Al2O3 into aluminum salt to be dissolved in a liquid phase, adding alkali into the solution to make the solid phase and the liquid phase generate water glass and sodium metaaluminate solution respectively, and finally dehydrating silicon-aluminum gel formed by mixing the water glass and the sodium metaaluminate solution to form transition metacolloid so as to form stable authigenic mineral, namely the zeolite molecular sieve. The method can make full use of the oil shale residues so as to increase the utilization rate, increase the economic benefit, avoid mass accumulation of the residues at the same time of changing waste into valuable, reduce the occupation amount of the land and reduce the environment pollution. The method has the advantages of simple process, less investment and low cost, and is an industrialized method of fine chemical engineering and comprehensive utilization of the oil shale residues with good prospect.

Description

1. Technical field [0001] The invention relates to a method for preparing zeolite molecular sieves from oil shale waste residue. 2. Background technology [0002] my country is rich in oil shale resources, and the recoverable shale oil resources are 12 billion tons, mainly distributed in Huadian, Nong'an, Jilin Province, Maoming, Guangdong, and Fushun, Liaoning, ranking fourth in the world. The main utilization methods of oil shale resources are refining shale oil and direct combustion for power generation. Taking Fushun as an example, nearly 400,000 tons of shale oil is produced from oil shale every year, and 5 million tons of oil shale waste residue is produced a year. At present, there are not many methods for effectively utilizing oil shale residues, resulting in a large accumulation of oil shale residues, which not only occupies a large area of ​​land, but also has a relatively large environmental pollution problem. Therefore, how to better comprehensively utilize oil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/02B09B3/00
Inventor 韩放鲍明福高健姚兴光赵鑫
Owner FUSHUN MINING IND GROUP